73 research outputs found
Octupole correlations in the structure of O2 bands in the N=88 nuclei150Sm Gd
Knowledge of the exact microscopic structure of the 01
+ ground state and first excited 02
+ state in 150Sm is
required to understand the branching of double β decay to these states from 150Nd. The detailed spectroscopy of
150Sm and 152Gd has been studied using (α,xn) reactions and the γ -ray arrays AFRODITE and JUROGAM II.
Consistently strong E1 transitions are observed between the excited Kπ = 02
+ bands and the lowest negative
parity bands in both nuclei. These results are discussed in terms of the possible permanent octupole deformation
in the first excited Kπ = 02
+ band and also in terms of the “tidal wave” model of Frauendorf.Web of Scienc
Spatial distribution of the polar thermospheric wind acceleration and importance of the 2D measurement with SDIs
The Tenth Symposium on Polar Science/Ordinary sessions: [OS] Space and upper atmospheric sciences, Wed. 4 Dec. / Institute of Statistics and Mathematics (ISM) Seminar room 2 (D304) (3rd floor
Electron spectroscopy with the SAGE spectrometer
A device called the SAGE (Silicon And GErmanium) spectrometer, designed for
in-beam electron spectroscopy, is introduced in this work. A detailed description
to the technical aspects of the device is given along with several examples
of analytical procedures related to work done with the device. The radial ltering
method and veto/add-back algorithms are tools for improving the quality
of the electron-gamma data whilst the time-gate selection procedure helps in
determining absolute internal conversion coe cients without reference points.
Two very di erent types of experiments with results obtained from the electron
data are introduced and analysed. Coulomb excitation is used to probe 154Sm
and a more typical fusion-evaporation reaction is used to produce 194Po. The
154Sm study is serves mainly for introduce the new analysis methods and no
gains are made when compared to other recent works on this isotope. In the
194Po analysis, despite some experimental pitfalls, the mystery regarding the
doublets in the electron spectrum measured with SACRED is solved and a
possible extension to the known level scheme of 194Po is given
Impact of load management in small scale industry and service sector on the demand of electricity
Impact of load management in small scale industry and service sector on the demand of electricity
In-beam γ-ray spectroscopy of low- and medium-spin levels in 211Po
The structure of the low- and medium-spin levels of the 211Po nucleus have been studied with in-beam γ-ray spectroscopy with the 208Pb(α,n)211Po fusion-evaporation reaction. The level scheme was further extended with levels of the configurations π(h9/2)22+−4+⊗νg9/2, π(h9/2)28+⊗νg9/2, π(h9/2)22+−4+⊗νi11/2, π(h9/2)22+−4+⊗νj15/2, π(h9/2f7/2)8+⊗νg9/2, and π(h9/2)20+⊗ν(g9/2)20+(s1/2)−1. The single-particle neutron states νd5/2 and νs1/2 were also identified. Furthermore, a number of states feeding the low-spin structures were added.peerReviewe
A Geant4 simulation package for the SAGE spectrometer
A comprehensive Geant4 simulation was built for the sage spectrometer. The
simulation package includes the silicon and germanium detectors, the mechanical structure and
the electromagnetic fields present in sage. This simulation can be used for making predictions
through simulating experiments and for comparing simulated and experimental data to better
understand the underlying physics.peerReviewe
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